diff options
Diffstat (limited to 'gl/m4/math_h.m4')
| -rw-r--r-- | gl/m4/math_h.m4 | 41 |
1 files changed, 39 insertions, 2 deletions
diff --git a/gl/m4/math_h.m4 b/gl/m4/math_h.m4 index dd99e7f2..d941bc33 100644 --- a/gl/m4/math_h.m4 +++ b/gl/m4/math_h.m4 @@ -1,4 +1,4 @@ -# math_h.m4 serial 9 +# math_h.m4 serial 14 dnl Copyright (C) 2007-2008 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -8,6 +8,31 @@ AC_DEFUN([gl_MATH_H], [ AC_REQUIRE([gl_MATH_H_DEFAULTS]) gl_CHECK_NEXT_HEADERS([math.h]) + AC_CACHE_CHECK([whether NAN macro works], [gl_cv_header_math_nan_works], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]], + [[/* Solaris 10 has a broken definition of NAN. Other platforms + fail to provide NAN, or provide it only in C99 mode; this + test only needs to fail when NAN is provided but wrong. */ + float f = 1.0f; +#ifdef NAN + f = NAN; +#endif + return f == 0;]])], + [gl_cv_header_math_nan_works=yes], + [gl_cv_header_math_nan_works=no])]) + if test $gl_cv_header_math_nan_works = no; then + REPLACE_NAN=1 + fi + AC_CACHE_CHECK([whether HUGE_VAL works], [gl_cv_header_math_huge_val_works], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <math.h>]], + [[/* Solaris 10 has a broken definition of HUGE_VAL. */ + double d = HUGE_VAL; + return d == 0;]])], + [gl_cv_header_math_huge_val_works=yes], + [gl_cv_header_math_huge_val_works=no])]) + if test $gl_cv_header_math_huge_val_works = no; then + REPLACE_HUGE_VAL=1 + fi ]) AC_DEFUN([gl_MATH_MODULE_INDICATOR], @@ -26,6 +51,11 @@ AC_DEFUN([gl_MATH_H_DEFAULTS], GNULIB_FREXP=0; AC_SUBST([GNULIB_FREXP]) GNULIB_FREXPL=0; AC_SUBST([GNULIB_FREXPL]) GNULIB_ISFINITE=0; AC_SUBST([GNULIB_ISFINITE]) + GNULIB_ISINF=0; AC_SUBST([GNULIB_ISINF]) + GNULIB_ISNAN=0; AC_SUBST([GNULIB_ISNAN]) + GNULIB_ISNANF=0; AC_SUBST([GNULIB_ISNANF]) + GNULIB_ISNAND=0; AC_SUBST([GNULIB_ISNAND]) + GNULIB_ISNANL=0; AC_SUBST([GNULIB_ISNANL]) GNULIB_LDEXPL=0; AC_SUBST([GNULIB_LDEXPL]) GNULIB_MATHL=0; AC_SUBST([GNULIB_MATHL]) GNULIB_ROUND=0; AC_SUBST([GNULIB_ROUND]) @@ -36,6 +66,9 @@ AC_DEFUN([gl_MATH_H_DEFAULTS], GNULIB_TRUNCF=0; AC_SUBST([GNULIB_TRUNCF]) GNULIB_TRUNCL=0; AC_SUBST([GNULIB_TRUNCL]) dnl Assume proper GNU behavior unless another module says otherwise. + HAVE_ISNANF=1; AC_SUBST([HAVE_ISNANF]) + HAVE_ISNAND=1; AC_SUBST([HAVE_ISNAND]) + HAVE_ISNANL=1; AC_SUBST([HAVE_ISNANL]) HAVE_DECL_ACOSL=1; AC_SUBST([HAVE_DECL_ACOSL]) HAVE_DECL_ASINL=1; AC_SUBST([HAVE_DECL_ASINL]) HAVE_DECL_ATANL=1; AC_SUBST([HAVE_DECL_ATANL]) @@ -49,18 +82,22 @@ AC_DEFUN([gl_MATH_H_DEFAULTS], HAVE_DECL_TANL=1; AC_SUBST([HAVE_DECL_TANL]) HAVE_DECL_TRUNC=1; AC_SUBST([HAVE_DECL_TRUNC]) HAVE_DECL_TRUNCF=1; AC_SUBST([HAVE_DECL_TRUNCF]) - HAVE_DECL_TRUNCL=1; AC_SUBST([HAVE_DECL_TRUNCL]) REPLACE_CEILF=0; AC_SUBST([REPLACE_CEILF]) REPLACE_CEILL=0; AC_SUBST([REPLACE_CEILL]) REPLACE_FLOORF=0; AC_SUBST([REPLACE_FLOORF]) REPLACE_FLOORL=0; AC_SUBST([REPLACE_FLOORL]) REPLACE_FREXP=0; AC_SUBST([REPLACE_FREXP]) REPLACE_FREXPL=0; AC_SUBST([REPLACE_FREXPL]) + REPLACE_HUGE_VAL=0; AC_SUBST([REPLACE_HUGE_VAL]) REPLACE_ISFINITE=0; AC_SUBST([REPLACE_ISFINITE]) + REPLACE_ISINF=0; AC_SUBST([REPLACE_ISINF]) + REPLACE_ISNAN=0; AC_SUBST([REPLACE_ISNAN]) REPLACE_LDEXPL=0; AC_SUBST([REPLACE_LDEXPL]) + REPLACE_NAN=0; AC_SUBST([REPLACE_NAN]) REPLACE_ROUND=0; AC_SUBST([REPLACE_ROUND]) REPLACE_ROUNDF=0; AC_SUBST([REPLACE_ROUNDF]) REPLACE_ROUNDL=0; AC_SUBST([REPLACE_ROUNDL]) REPLACE_SIGNBIT=0; AC_SUBST([REPLACE_SIGNBIT]) REPLACE_SIGNBIT_USING_GCC=0; AC_SUBST([REPLACE_SIGNBIT_USING_GCC]) + REPLACE_TRUNCL=0; AC_SUBST([REPLACE_TRUNCL]) ]) |